Would you risk $1.00 to make .25 cents?
How about .50 cents? or $1.00? You should be saying, "No."
You're going to try to at least double what you're willing to
risk. That doesn't mean doubling your dollar amount invested, it means
the amount that you're willing to risk in that trade.

Lose
20% --- you have to make 25% to get back to even.
Lose 30% --- you have to make 43% to get back to even.
Lose 40% --- you have to make 67% to get back to even.
Lose 50% --- you have to make 100% to get back to even.
Lose 60% --- you have to make 150% to get back to even
Lose 70% --- you have to make 233% to get back to even.
Lose 80% --- you have to make 400% to get back to even.